Multi-channel multi-concurrent communication mask all-in-one machine

Abstract

The utility model discloses a multi-channel multi-concurrent communication mask all-in-one machine which comprises a mask body, a microphone, a headset, a signal processing board card and a power supply module are arranged in the mask body, and the signal processing board card comprises a wireless transceiver module, a power amplification module, a microprocessor, a key control module and a storage module. According to the technical scheme, the LORA chip is adopted as the core of the wireless receiving and transmitting module, efficient and stable remote communication is achieved, meanwhile, the all-in-one machine supports the multi-channel communication function, the problem that communication between different working areas or working groups is prone to mutual interference is solved, and the working efficiency is improved. A user can easily switch communication channels through the key control module, and the requirement for efficient communication of multiple teams at the same time is met. Not only is communication flexibility improved, but also cooperation efficiency and safety in mine operation are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication mask equipment technical field, especially in the multi -channel multi -concurrent communication mask all -in -one. BACKGROUND

[0002] In modern mining production, the mine environment is complex and harsh, which poses many challenges to the health and work efficiency of miners. The dust concentration in the mine is extremely high, usually hundreds of times higher than that of ordinary air, which seriously affects the respiratory health of miners. In addition, the noise in the mine is generally large, which greatly interferes with the normal communication between miners.

[0003] Therefore, the Chinese utility model patent with application number 202420748536.0 discloses a wearable device for mines, which attempts to solve the problems of dust protection and communication to some extent. However, it still has some limitations. In terms of communication, although it mentions connection with communication devices, it does not delve into how to ensure high stability, anti-interference and long-distance transmission of communication in the complex electromagnetic environment of the mine, multiple obstacles and severe signal attenuation. For example, in the deep part of the mine or the area with large metal equipment interference, the communication effect has not been fully verified and optimized. For multi-person collaborative work scenarios, there is no detailed design of multi-channel communication function, and communication between different work areas or work groups is easily interfered with each other, which cannot meet the needs of simultaneous and efficient communication of multiple teams in complex mine operations.

[0004] Therefore, the utility model provides a new scheme to solve this problem. UTILITY MODEL CONTENT

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a multi-channel multi-concurrent communication mask all-in-one machine.

[0006] The technical solution it solves is: a multi-channel multi-concurrent communication mask all-in-one machine, including a mask body, a microphone, a headset, a signal processing board and a power module are arranged in the mask body, the signal processing board includes:

[0007] A wireless transceiver module is used for data transmission between other all-in-one machines to realize multi-channel multi-concurrent voice communication;

[0008] A power amplifier module is used for power amplification of the audio signal received by the wireless transceiver module, and is connected with the headset through an audio connector;

[0009] A microprocessor is connected with the wireless transceiver module, used for processing and forwarding the data received by the wireless transceiver module;

[0010] The key control module includes a communication frequency adjustment key circuit and a PTT function key circuit, and a user can switch a communication channel or start / stop a talk by pressing a corresponding key.

[0011] The storage module is connected with the microprocessor and is used for storing communication records and setting information of a user.

[0012] Preferably, the wireless transceiver module is an LORA chip, the MIC_P_IN and MIC_N_IN pins of the LORA chip are connected with the microphone, the TXD and RXD pins of the LORA chip are connected with the microprocessor, and the LINE_OUT pin of the LORA chip is connected with the power amplifier module.

[0013] Preferably, the power amplifier module includes an audio power amplifier, a first input end of the audio power amplifier is connected with one end of a first resistor and a second resistor, the other end of the first resistor is connected with the LINE_OUT pin of the LORA chip through a first capacitor, the other end of the second resistor is connected with a first output end of the audio power amplifier and is connected with a LINE_R pin of the audio connector through a second capacitor, a second input end of the audio power amplifier is connected with one end of a third resistor and a fourth resistor, the other end of the third resistor is connected with the LINE_OUT pin of the LORA chip through a third capacitor, and the fourth resistor is connected with a second output end of the audio power amplifier and is connected with a LINE_L pin of the audio connector through a fourth capacitor.

[0014] Preferably, the audio power amplifier is a dual-channel audio power amplifier integrated circuit with a model number of LM4810MM / NOPB.

[0015] Preferably, the LORA chip is a SA618F22 full-duplex audio intercom module.

[0016] Preferably, the microprocessor is a single-chip microcomputer with a model number of STM32F103RCT6.

[0017] Preferably, the storage module is a flash memory with a model number of W25Q16JVSSIQ.

[0018] Preferably, the frequency adjustment key circuit includes:

[0019] The mode switching sub-circuit is used for switching the frequency adjustment mode of the device, and the microprocessor detects the level change of the input pin to perform the mode switching operation when the mode switching key is pressed.

[0020] The frequency up sub-circuit is used for increasing the frequency of the current communication channel.

[0021] A frequency down sub-circuit is configured to reduce the frequency of the current communication channel.

[0022] Preferably, the power module comprises a lithium battery, a first power supply circuit and a second power supply circuit, wherein:

[0023] The first power supply circuit comprises a buck DC-DC converter chip of model TPS54302DDCR, which is configured to adjust the output voltage of the lithium battery to 5V for power supply.

[0024] The second power supply circuit comprises a forward low dropout regulator of model AMS1117-3.3V, which is configured to reduce the output voltage of the lithium battery to 3.3V for power supply.

[0025] By the above technical solution, the application has the advantages that: the application uses a LORA chip as the core of the wireless transceiver module, achieving efficient and stable long-distance communication. The LORA technology, with its excellent spread spectrum modulation method and strong anti-interference ability, can still maintain stable communication effect in the complex electromagnetic environment and multi-obstacle scene of the mine. At the same time, the all-in-one machine supports multi-channel communication function, solving the problem of mutual interference between different operation areas or work groups. Users can easily switch communication channels through the key control module, realizing the demand of efficient communication of multiple teams at the same time. This design not only improves the flexibility of communication, but also enhances the collaborative efficiency and safety in mine operation. In addition, the application also has a powerful power amplifier module, which can ensure that the audio signal produces enough sound on the headset, so that users can still clearly hear the call content in the noisy mine environment. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The system structure block diagram of the multi-channel multi-concurrent communication mask all-in-one machine is shown.

[0027] Figure 2 The structure block diagram of the signal processing board card of the embodiment of the application is shown.

[0028] Figure 3 The external circuit wiring diagram of the LORA chip of the embodiment of the application is shown.

[0029] Figure 4 The system working principle diagram of the embodiment of the application is shown.

[0030] Figure 5 The circuit principle diagram of the power amplifier module of the embodiment of the application is shown.

[0031] Figure 6 The external circuit wiring diagram of the microprocessor of the embodiment of the application is shown.

[0032] Figure 7 The frequency adjustment key circuit principle diagram of an embodiment of the utility model.

[0033] Figure 8 The PTT function key circuit principle diagram of an embodiment of the utility model.

[0034] Figure 9 The circuit principle diagram of the storage module of an embodiment of the utility model.

[0035] Figure 10 The wiring principle diagram of the audio connector of an embodiment of the utility model. DETAILED DESCRIPTION

[0036] The foregoing and other technical contents, features and effects of the utility model will be described below in conjunction with the accompanying drawings. Figure 1 to the accompanying drawings Figure 10 The detailed description of the embodiments will be clearly presented. The structural contents mentioned in the following embodiments are all referred to the drawings.

[0037] The exemplary embodiments of the utility model will be described below with reference to the accompanying drawings.

[0038] As shown in Figure 1 A multi-channel multi-concurrent communication mask all-in-one machine, comprising a mask body, a microphone, a headset, a signal processing board card and a power module are arranged in the mask body.

[0039] As shown in Figure 2 The signal processing board card comprises:

[0040] A wireless transceiver module is used for data transmission between other all-in-one machines to realize multi-channel multi-concurrent voice communication.

[0041] A power amplifier module is used for power amplification of the audio signal received by the wireless transceiver module, and is connected with the headset through an audio connector.

[0042] A microprocessor is connected with the wireless transceiver module, used for processing and forwarding the data received by the wireless transceiver module.

[0043] A key control module comprises a communication frequency adjustment key circuit and a PTT (Push-To-Talk, push-to-talk) function key circuit, and the user can switch the communication channel or start / stop the talk by pressing the corresponding key.

[0044] A storage module is connected with the microprocessor, used for storing the communication record and setting information of the user.

[0045] In a specific embodiment, asFigure 3 As shown, the wireless transceiver module uses the LORA chip. The MIC_P_IN and MIC_N_IN pins of the LORA chip are connected to the microphone, the TXD and RXD pins of the LORA chip are connected to the microprocessor, and the LINE_OUT pin of the LORA chip is connected to the power amplifier module.

[0046] like Figure 4 As shown, at the transmitting end, the analog audio signal collected by the microphone is first converted into a digital signal. After the processed digital audio signal enters the LoRa chip, the chip uses spread spectrum technology to modulate the signal, expanding the signal spectrum. This spread spectrum modulation method enhances the signal's anti-interference capability. The modulated signal is then transmitted through the antenna, thereby enabling wireless communication with other all-in-one devices.

[0047] At the receiving end, after the antenna receives the signal transmitted from other integrated devices, the signal enters the LORA chip. The LORA chip demodulates the received signal, restoring it to the original audio digital signal. The demodulated signal then undergoes error correction coding (FEC) and other processing operations. These error correction codes can correct errors that may occur during signal transmission, ensuring the accuracy of the audio signal.

[0048] Because the audio signal output power of the LORA chip is relatively small and insufficient to drive headphones to produce a sufficiently loud sound, the audio signal output from the LINE_OUT pin of the LORA chip, after processing the audio reception from other all-in-one devices, serves as the input signal source for the power amplifier module. Specifically, for example... Figure 5 As shown, the power amplifier module includes an audio power amplifier. The first input terminal VIN1 of the audio power amplifier is connected to one end of the first resistor R18 and the second resistor R11. The other end of the first resistor R18 is connected to the LINE_OUT pin of the LORA chip through the first capacitor C13. The other end of the second resistor R11 is connected to the first output terminal VOUT1 of the audio power amplifier and is connected to the LINE_R pin of the audio connector through the second capacitor C5. The second input terminal VIN2 of the audio power amplifier is connected to one end of the third resistor R28 and the fourth resistor R27. The other end of the third resistor R28 is connected to the LINE_OUT pin of the LORA chip through the third capacitor C38. The fourth resistor R27 is connected to the second output terminal VOUT2 of the audio power amplifier and is connected to the LINE_L pin of the audio connector through the fourth capacitor C37.

[0049] In the specific work of the power amplifier module, the audio signal output by the LORA chip is transmitted to the two-channel input end of the audio power amplifier through two branches. For the first channel, the signal first passes through the filter circuit composed of the first capacitor C13 and the first resistor R18, and then is transmitted to the first input end VIN1 of the audio power amplifier; for the second channel, the signal passes through the filter and current limiting circuit composed of the third capacitor C38 and the third resistor R28, and reaches the second input end VIN2 of the audio power amplifier.

[0050] In specific implementation, the audio power amplifier selects a dual-channel audio power amplifier integrated circuit with a model of LM4810MM / NOPB. It receives audio signals from VIN1 and VIN2, amplifies their amplitudes, and provides sufficient power to drive the headphones. Specifically, as shown in Figure 10 for the first channel, the amplified signal is output from the first output end VOUT1 of the audio power amplifier, then passes through RC filter noise reduction, and is transmitted to the right channel of the earphone through the LINE_R pin of the audio connector. For the second channel, the amplified signal is output from the second output end VOUT2 of the audio power amplifier, then passes through RC filter noise reduction, and is transmitted to the left channel of the earphone through the LINE_L pin of the audio connector.

[0051] In a specific embodiment, the LORA chip selects a SA618F22 full-duplex audio intercom module, as shown in Figure 3 It combines advanced radio frequency transceiver technology and audio processing functions, enabling users to achieve efficient and stable voice communication between different communication masks. Specifically, when the user speaks into the microphone, the audio signal is first collected. These analog audio signals are input into the chip through the MIC_P_IN and MIC_N_IN pins connected to the SA618F22 chip. The chip contains a dedicated audio processing circuit that converts analog audio signals into digital audio signals. The converted digital audio signals will be modulated onto a radio frequency signal. During modulation, the SA618F22 chip will set the frequency of the radio frequency signal according to the frequency channel information set by the microprocessor. The chip supports multi-channel operation, and different channels allow users to communicate independently in different communication groups, avoiding mutual interference.

[0052] As shown in Figure 6As shown, the microprocessor is selected from the model STM32F103RCT6 single-chip microcomputer, which is a 32-bit microcontroller based on ARM Cortex-M3 core, has the characteristics of high performance, low power consumption and rich peripheral interface, etc. In the specific working process, STM32F103RCT6 is responsible for data processing, communication coordination and frequency adjustment function realization. When receiving data, when the SA618F22 chip sends data to the STM32F103RCT6 through the RXD pin, the STM32F103RCT6 will read the data from the corresponding serial port receiving register and store it in the internal buffer area. In this process, the STM32F103RCT6 will perform preliminary checking on the data, including checking the data integrity, adding or removing the data header information and the like. When sending data, the STM32F103RCT6 controls the audio data acquisition process by configuring the parameters of the ADC (analog-to-digital converter), and will send the corresponding control command to the LORA chip according to the current communication channel information, to ensure that the LORA chip correctly modulates the audio digital signal to the radio frequency signal and transmits it out.

[0053] In the specific operation process, the user switches the communication channel or starts / stops the call through the communication frequency adjustment key circuit and the PTT function key circuit in the key control module. The STM32F103RCT6 obtains the user's operation instruction by detecting the output state of the key control module. Specifically, as shown in Figure 7 The frequency adjustment key circuit includes:

[0054] The mode switching sub-circuit is used to switch the frequency adjustment mode of the device. When the mode switching key K1 is pressed, the microprocessor detects the input pin level change to perform mode switching operation, to meet the demand for communication frequency adjustment in different use scenarios.

[0055] The frequency up sub-circuit is used to increase the frequency of the current communication channel. When the frequency up key K3 is pressed, the corresponding circuit generates a level change and transmits it to the microprocessor, and the microprocessor gradually increases the value corresponding to the communication frequency according to the set frequency adjustment step, thereby changing the working frequency of the wireless transceiver module, realizing the up adjustment of the channel, and facilitating the user to find the appropriate communication channel.

[0056] The frequency down sub-circuit is used to reduce the frequency of the current communication channel. Similar to the frequency up sub-circuit, after pressing the frequency down key K2, the microprocessor will correspondingly reduce the communication frequency value according to the set down adjustment step, so that the wireless transceiver module works on a lower frequency channel, facilitating the flexible selection of the appropriate channel for communication.

[0057] The PTT function key circuit, as shown in Figure 8As shown, after pressing the PTT button K4, the circuit generates a corresponding level change, and the signal is transmitted to the microprocessor, which controls the wireless transceiver module to enter the sending state or stop sending state, that is, to realize the function of starting / stopping the call. When the button is pressed, the voice data transmission is started, and when the button is released, the transmission is stopped, which is convenient for the user to make a call when needed, avoiding unnecessary voice transmission interference.

[0058] Through the above operation process, the user can realize convenient communication control in the multi-channel multi-concurrent communication mask all-in-one machine. The user can flexibly switch channels, adjust frequencies, and control call states according to their own needs. This operation method not only improves the efficiency and quality of communication, but also enhances the user's interactive experience. Users can more freely choose their own communication channels and methods to meet the communication needs in different scenarios.

[0059] Meanwhile, the STM32F103RCT6 is also responsible for the management of the storage module. When configuring, for example, Figure 9 As shown, the storage module uses a flash memory with the model W25Q16JVSSIQ to store the user's communication records, channel settings, system status, etc. During frequency adjustment, whenever the channel information changes, the STM32F103RCT6 will store the new channel information in the storage module so that it can quickly recover to the channel used by the user last time when starting next time. In addition, for the user's communication records, the STM32F103RCT6 will organize the relevant information of each communication into a specific data format and then store these information in the storage module through the SPI interface.

[0060] In terms of all-in-one machine power supply, the power supply module includes a lithium battery, a first power supply circuit and a second power supply circuit, wherein:

[0061] The first power supply circuit includes a step-down DC-DC converter chip with the model TPS54302DDCR, which is used to adjust the output voltage of the lithium battery to 5V for power supply;

[0062] The second power supply circuit includes a forward low dropout regulator with the model AMS1117-3.3V, which is used to reduce the output voltage of the lithium battery to 3.3V for power supply.

[0063] Through the reasonable adjustment of the output voltage of the lithium battery by the first power supply circuit and the second power supply circuit, appropriate power supply voltage is provided for each module in the all-in-one machine. This makes each module work in a stable power supply environment, reducing the possibility of faults due to unstable voltage.

[0064] In summary, the technical scheme of the present application uses a LORA chip as the core of the wireless transceiver module, achieving efficient and stable long-distance communication. LORA technology, with its excellent spread spectrum modulation method and strong anti-interference ability, can still maintain stable communication effects in the complex electromagnetic environment and multi-obstacle scene of the mine. At the same time, the all-in-one machine supports multi-channel communication function, solving the problem of easy mutual interference between different operation areas or work groups. Users can easily switch communication channels through the key control module, realizing the demand for efficient communication of multiple teams at the same time. This design not only improves the flexibility of communication, but also enhances the collaborative efficiency and safety in mine operation. In addition, the technical scheme of the present application also has a powerful power amplification module, which can ensure that the audio signal produces a large enough sound on the headset, so that users can still clearly hear the call content in the noisy mine environment.

[0065] The above is a further detailed description of the present application in conjunction with the specific implementation, which cannot be limited to this; for the skilled in the art and related technical field, the expansion and operation method, data replacement made on the basis of the technical scheme idea of the present application should fall within the protection scope of the present application.

Claims

1. A multi-channel, multi-concurrency communication mask-making all-in-one machine, comprising a mask body, wherein a microphone, a headset, a signal processing board, and a power module are disposed within the mask body, characterized in that, The signal processing board includes: A wireless transceiver module is used for data transmission with other all-in-one machines to enable multi-channel, multi-concurrency voice communication; A power amplifier module is used to amplify the audio signal received by the wireless transceiver module, and is connected to the headphones via an audio connector; A microprocessor, connected to the wireless transceiver module, is used to process and forward the data received by the wireless transceiver module; The button control module includes a communication frequency adjustment button circuit and a PTT function button circuit, allowing users to switch communication channels or start / stop calls by pressing the corresponding buttons. The storage module, connected to the microprocessor, is used to store the user's communication records and settings information.

2. The multi-channel, multi-concurrency communication mask-making all-in-one machine according to claim 1, characterized in that, The wireless transceiver module uses a LORA chip. The MIC_P_IN and MIC_N_IN pins of the LORA chip are connected to the microphone, the TXD and RXD pins of the LORA chip are connected to the microprocessor, and the LINE_OUT pin of the LORA chip is connected to the power amplifier module.

3. The multi-channel, multi-concurrency communication mask-making all-in-one machine according to claim 2, characterized in that, The power amplifier module includes an audio power amplifier. The first input terminal of the audio power amplifier is connected to one end of a first resistor and a second resistor. The other end of the first resistor is connected to the LINE_OUT pin of the LORA chip through a first capacitor. The other end of the second resistor is connected to the first output terminal of the audio power amplifier and is connected to the LINE_R pin of the audio connector through a second capacitor. The second input terminal of the audio power amplifier is connected to one end of a third resistor and a fourth resistor. The other end of the third resistor is connected to the LINE_OUT pin of the LORA chip through a third capacitor. The fourth resistor is connected to the second output terminal of the audio power amplifier and is connected to the LINE_L pin of the audio connector through a fourth capacitor.

4. The multi-channel, multi-concurrency communication mask-making all-in-one machine according to claim 3, characterized in that, The audio power amplifier is a dual-channel audio power amplifier integrated circuit with model number LM4810MM / NOPB.

5. The multi-channel, multi-concurrency communication mask-making all-in-one machine according to claim 4, characterized in that, The LORA chip used is the SA618F22 full-duplex audio intercom module.

6. The multi-channel, multi-concurrency communication mask-making all-in-one machine according to claim 5, characterized in that, The microprocessor used is an STM32F103RCT6 microcontroller.

7. The multi-channel, multi-concurrency communication mask-making all-in-one machine according to claim 6, characterized in that, The storage module is a W25Q16JVSSIQ flash memory.

8. The multi-channel, multi-concurrency communication mask-making all-in-one machine according to claim 1, characterized in that, The frequency adjustment button circuit includes: The mode switching sub-circuit is used to switch the frequency adjustment mode of the device. When the mode switching button is pressed, the microprocessor detects the change in the level of the input pin to perform the mode switching operation. Frequency uptuning circuit, used to increase the frequency of the current communication channel; Frequency downtuning circuit, used to reduce the frequency of the current communication channel.

9. The multi-channel, multi-concurrency communication mask-making all-in-one machine according to claim 1, characterized in that, The power module includes a lithium battery, a first power supply circuit, and a second power supply circuit, wherein: The first power supply circuit includes a step-down DC-DC converter chip of model TPS54302DDCR, which is used to adjust the output voltage of the lithium battery to 5V for power supply; The second power supply circuit includes a forward low-dropout regulator of model AMS1117-3.3V, used to reduce the output voltage of the lithium battery to 3.3V for power supply.

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